Fatal error: Uncaught Error: Class "SebastianBergmann\Diff\Output\AbstractChunkOutputBuilder" not found in D:\xampp\htdocs\trading_temp\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php:29 Stack trace: #0 {main} thrown in D:\xampp\htdocs\trading_temp\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php on line 29